No expiration date. Buy unlimited vouchers for yourself and unlimited as gifts. Voucher is valid for two 16GB microSDHC cards with class 4 speed rating plus an SD adapter and a 5 year warranty. Redeem online by clicking the "Redemption" link on your voucher. Please allow 2-3 weeks for processing and shipping following deal offer close. Tax and shipping within the US included. For customer inquiry, please call 1.800.990.6771. Not valid with other offers. No cash back or credit. Cannot be redeemed before Tuesday, January 10, 2012.